Never again
We were over at a friend's house for dinner.... Their (Windows Me!) computer was acting up and they asked if I could have a look at it. The obvious happened. My (late) wife had a lovely dinner with friends, while I was stuck at the computer for THREE HOURS. That was the day I swore, "Never again".
Now when I'm asked what I do for a living, I say, "I'm a software developer -- and no, I won't fix your computer."
The only person I perform free IT work for now is my girlfriend.